Make blas a virtual dependency, default netlib-blas.

var/spack/packages/atlas/package.py

@@ -14,6 +14,10 @@ class Atlas(Package):
     homepage = "http://math-atlas.sourceforge.net/"
     url      = "http://downloads.sourceforge.net/project/math-atlas/Stable/3.10.2/atlas3.10.2.tar.bz2"
 
+    # TODO: make this provide BLAS once we have the ability to prefer dependencies.
+    # TODO: until then netlib-blas will be the default (and only) blas
+    # provides('blas')
+
     version('3.10.2', 'a4e21f343dec8f22e7415e339f09f6da')
 
     def patch(self):

var/spack/packages/blas/package.py

@@ -1,17 +0,0 @@
-from spack import *
-import os
-
-class Blas(Package):
-    """The BLAS (Basic Linear Algebra Subprograms) are routines that provide standard 
-    building blocks for performing basic vector and matrix operations."""
-
-    homepage = "http://www.netlib.org/blas/"
-
-    version('unversioned', '5e99e975f7a1e3ea6abcad7c6e7e42e6', 
-        url='http://www.netlib.org/blas/blas.tgz')
-
-    def install(self, spec, prefix):    
-        make()
-        mkdirp('%s' % prefix.lib) # Create the lib dir inside the install dir.
-        move('./blas_LINUX.a', '%s/libblas.a' % prefix.lib) # Rename the generated lib file to libblas.a
-        

var/spack/packages/netlib-blas/package.py

@@ -24,5 +24,6 @@ def install(self, spec, prefix):
         mkdirp(prefix.lib)
         install('librefblas.a', prefix.lib)
 
-        # Blas virtual package should provide blas.a
+        # Blas virtual package should provide blas.a and libblas.a
         symlink(prefix.lib + '/librefblas.a', prefix.lib + '/blas.a')
+        symlink(prefix.lib + '/librefblas.a', prefix.lib + '/libblas.a')